6,4(2-3х)=6(0,8х-1)+6,8
12.8 - 19.2х=4.8х - 6 + 6.8
-19.2х - 4.8х= -6+6.8-12.8
-24х=-12
х=0.5
12.8-19.2x=4.8x-6+6.8
-19.2x-4.8x=-6+6.8-12.8
-24x= -12
x= 0.5